Pampered Pooches Embroidered Id Collars Made of polypro nylon, solid steel D-rings, double lock snap closure, adjustable. Colors available:black, brown, navy blue, royal blue, sky blue, red, orange, yellow, pink, teal, grass green, hunter green, lime green. Sizes: extra small=8-10", small=10-13", medium=13-16", large=16-22", extra large=22" and above. ALL CUSTOMERS MUST PROVIDE PETS INFORMATION, COLLAR SIZE, COLOR, THREAD COLOR, PETS FIRST NAME, AND PHONE NUMBER. PLEASE EITHER UTILIZE THE GIFT BOX, OR EMAIL SELLER IMMEDIATELY UPON ORDERING.